IEEE C57.164-2021
Filled Power Transformers, Regulators, and Reactors
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About This Item
C57.164-2021 is a technical standard for filled power transformers, regulators, and reactors, giving focused guidance for equipment used in power, energy, and industrial applications. It helps define expectations for design, construction, and performance where liquid-filled apparatus must operate reliably under demanding electrical conditions. For engineers, buyers, and compliance teams, this standard can support clearer specification and more consistent product selection across critical utility and plant infrastructure.
Overview of C57.164-2021
This standard addresses the technical context of filled power transformers, regulators, and reactors, with attention to the requirements that commonly shape their engineering and evaluation. C57.164-2021 is relevant when selecting or reviewing equipment that must meet defined electrical and mechanical expectations in service. It is particularly useful for aligning design intent, manufacturing practices, and acceptance criteria so that the final apparatus is suitable for power system use and long-term operation.
Typical use cases
C57.164-2021 is typically applied when specifying or procuring liquid-filled transformers, voltage regulators, or reactors for utility substations, distribution networks, and industrial power systems. It may also support internal review of equipment ratings, insulation arrangements, cooling considerations, and performance expectations before installation or replacement. In practice, the standard is useful for projects where equipment must integrate into existing power infrastructure and where consistent technical documentation is needed.
Why it matters
For organizations working with filled power apparatus, C57.164-2021 helps reduce ambiguity in design and procurement. Clear technical requirements can improve compliance, support testing and inspection, and lower the risk of mismatched equipment in the field. It also provides a common reference point for comparing products and verifying that transformers, regulators, and reactors are built to the expected level of performance and reliability. That consistency is important in systems where downtime and failure can carry significant cost.
- Filled power transformers
- Voltage regulators
- Reactors for power systems
- Design and performance expectations
- Utility and industrial applications
- Publication Date: 2022
- Standard Status: Active
- Publisher: IEEE
- Subject: Components, Circuits, Devices and Systems; Power, Energy and Industry Applications
- Official IEEE: Doi link
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